Figure 4.
Bivariate relationships between ecological and epidemiological factors of chiltepin populations and evolutionary parameters of PepGMV populations. Significant regressions of plant species richness, chiltepin genetic diversity and plant density, and PepGMV prevalence onto the genetic diversity, the rate of non-synonymous and synonymous substitutions, the frequency of recombinants, and the frequency of different recombinant profiles in PepGMV populations are represented for each genomic component: DNA-A (blue) and DNA-B (red). Species richness (SR) is expressed as number of species; host genetic diversity (He) is expressed as expected heterozygosity; host plant density is expressed as plants/m2, and virus prevalence as percentage of infected plants over the total of plants sampled. Note the different scales in the x- and y axis depending on the factor-parameter combination. Data correspond to eight populations with at least four fully sequenced viral isolates.